Note: The
WHO Model List of Essential Medicines has been updated every two years
since 1977.
Following the latest and 14th
Expert
Committee on the Selection and Use of Essential Medicines, the 13th
list was updated.

The 13th list, dated from April 2003. It contained
316 active substances which
included 12 ARVs and over 60 other essential medicines for HIV-related
care, including drugs against opportunistic infections.